Other things related to xbt data:
[[,xbt-method,
[[<-,xbt-method,
as.xbt(),
plot,xbt-method,
read.xbt(),
read.xbt.noaa1(),
summary,xbt-method,
xbt,
xbt-class,
xbt.edf
Other functions that subset oce objects:
subset,adp-method,
subset,adv-method,
subset,amsr-method,
subset,argo-method,
subset,cm-method,
subset,coastline-method,
subset,ctd-method,
subset,echosounder-method,
subset,lobo-method,
subset,met-method,
subset,oce-method,
subset,odf-method,
subset,rsk-method,
subset,sealevel-method,
subset,section-method,
subset,topo-method